This is a preliminary report of previously collected data. This report is pulling information on all Northeast Red hake stocks.

Methods

General methods

Northeast stocks were identified from NOAA/EDAB ECSA seasonal species strata.

Data sources for each analysis are identified in the Results.

All continuous temporal data were plotted against time. If there were 30 or more years of data, a geom_gls regression line was fit (yellow = significant increase; purple = significant decrease; no line = no significant trend). If there were fewer than 30 years of data, no regression was fit.

assessmentdata methods

Stock assessment and data quality information were compiled into a summary table.

B/Bmsy was classified as “DANGER” if it was below 1 and “GOOD” if it was above 1.

F/Fmsy was classified as “DANGER” if it was above 1 and “GOOD” if it was below 1.

survdat methods

survdat data with zero abundance were not included in this analysis. Abundance and biomass were summed for each year and season. All other metrics were averaged for each year and season. The tables show summary statistics for the entire time series and for the most recent 5 years in the time series.

Results

Indicator time series

Latitude and longitude

Strata maps were pulled and compiled using code from NOAA/EDAB ECSA. Please note, only fall and spring strata are shown on the map.

Latitude and longitude ranges were calculated from NOAA/EDAB ECSA seasonal species strata and Bottom Trawl Survey (BTS) shapefiles. The coordinate system is WGS84.

Stock assessment and data quality information

Stock assessment and data quality information were pulled from assessmentdata::stockAssessmentSummary.

B/Bmsy

B/Bmsy data were pulled from assessmentdata::stockAssessmentSummary.

The most recent status of B/Bmsy is: GOOD, DANGER

Figure

Data

F/Fmsy

F/Fmsy data were pulled from assessmentdata::stockAssessmentSummary.

The most recent status of F/Fmsy is: GOOD, DANGER

Figure

Data

Revenue

Commercial catch data were downloaded from NOAA FOSS.

Figure

Data

Recruitment

Recruitment data were pulled from assessmentdata::stockAssessmentData. Separate geom_gls() functions were fit for each region; trend lines are only shown when the trend was statistically significant, so some plots may have fewer trend lines than regions.

Figure
## [1] "NO DATA"
Data

Diet

Diet data were compiled from existing data. For analysis, all geographic samples were grouped by season, year, and region, and only year-season-region combinations with more than 20 predators sampled were considered. Prey items that made up more than 5% of the predator’s diet in at least one year-season-region were identified to the broad category level; all other prey are grouped into the “other” category.

Figure

Summary
Prey category Season Region Mean proportion +- SD (n years) Range
ANIMAL_REMAINS FALL Gulf of Maine / Northern Georges Bank 0.039 +- 0.034 (40) 0.001 - 0.142
ANIMAL_REMAINS FALL Outside stock area 0.079 +- 0.093 (29) 0.001 - 0.331
ANIMAL_REMAINS FALL Southern Georges Bank / Mid 0.071 +- 0.055 (45) 0.005 - 0.201
ANIMAL_REMAINS SPRING Gulf of Maine / Northern Georges Bank 0.036 +- 0.03 (40) 0.001 - 0.135
ANIMAL_REMAINS SPRING Outside stock area 0.051 +- 0.035 (28) 0.003 - 0.132
ANIMAL_REMAINS SPRING Southern Georges Bank / Mid 0.074 +- 0.056 (37) 0.001 - 0.208
ANIMAL_REMAINS SUMMER Gulf of Maine / Northern Georges Bank 0.033 +- 0.026 (10) 0.001 - 0.087
ANIMAL_REMAINS SUMMER Outside stock area 0.052 +- 0.034 (5) 0.016 - 0.103
ANIMAL_REMAINS SUMMER Southern Georges Bank / Mid 0.045 +- 0.006 (3) 0.039 - 0.052
ANIMAL_REMAINS WINTER Southern Georges Bank / Mid 0.097 +- 0.069 (13) 0.009 - 0.249
ANNELIDA FALL Gulf of Maine / Northern Georges Bank 0.013 +- 0.012 (37) 0 - 0.042
ANNELIDA FALL Outside stock area 0.059 +- 0.082 (27) 0.005 - 0.407
ANNELIDA FALL Southern Georges Bank / Mid 0.024 +- 0.024 (43) 0 - 0.126
ANNELIDA SPRING Gulf of Maine / Northern Georges Bank 0.028 +- 0.029 (40) 0.001 - 0.142
ANNELIDA SPRING Outside stock area 0.034 +- 0.031 (23) 0 - 0.109
ANNELIDA SPRING Southern Georges Bank / Mid 0.032 +- 0.027 (37) 0.001 - 0.099
ANNELIDA SUMMER Gulf of Maine / Northern Georges Bank 0.021 +- 0.022 (10) 0.003 - 0.072
ANNELIDA SUMMER Outside stock area 0.031 +- 0.039 (5) 0.005 - 0.1
ANNELIDA SUMMER Southern Georges Bank / Mid 0.017 +- 0.018 (2) 0.005 - 0.03
ANNELIDA WINTER Southern Georges Bank / Mid 0.024 +- 0.046 (11) 0 - 0.163
ARTHROPODA FALL Gulf of Maine / Northern Georges Bank 0.511 +- 0.198 (40) 0.088 - 0.869
ARTHROPODA FALL Outside stock area 0.517 +- 0.234 (30) 0.089 - 0.944
ARTHROPODA FALL Southern Georges Bank / Mid 0.503 +- 0.179 (45) 0.108 - 0.888
ARTHROPODA SPRING Gulf of Maine / Northern Georges Bank 0.552 +- 0.253 (40) 0.058 - 0.972
ARTHROPODA SPRING Outside stock area 0.646 +- 0.227 (28) 0.085 - 0.952
ARTHROPODA SPRING Southern Georges Bank / Mid 0.489 +- 0.197 (37) 0.113 - 0.921
ARTHROPODA SUMMER Gulf of Maine / Northern Georges Bank 0.625 +- 0.208 (10) 0.42 - 0.977
ARTHROPODA SUMMER Outside stock area 0.616 +- 0.266 (5) 0.162 - 0.805
ARTHROPODA SUMMER Southern Georges Bank / Mid 0.622 +- 0.281 (3) 0.4 - 0.938
ARTHROPODA WINTER Southern Georges Bank / Mid 0.34 +- 0.18 (13) 0.053 - 0.75
CNIDARIA FALL Gulf of Maine / Northern Georges Bank 0.014 +- 0.026 (9) 0 - 0.079
CNIDARIA FALL Outside stock area 0.046 +- 0.053 (2) 0.009 - 0.084
CNIDARIA FALL Southern Georges Bank / Mid 0.007 +- 0.006 (7) 0 - 0.017
CNIDARIA SPRING Gulf of Maine / Northern Georges Bank 0.013 +- 0.021 (6) 0 - 0.055
CNIDARIA SPRING Outside stock area 0.041 +- 0.039 (4) 0.006 - 0.078
CNIDARIA SPRING Southern Georges Bank / Mid 0.009 +- 0.006 (7) 0.002 - 0.021
CNIDARIA SUMMER Outside stock area 0.001 +- NA (1) 0.001 - 0.001
CNIDARIA SUMMER Southern Georges Bank / Mid 0.049 +- NA (1) 0.049 - 0.049
ECHINODERMATA FALL Gulf of Maine / Northern Georges Bank 0.007 +- 0.014 (22) 0 - 0.045
ECHINODERMATA FALL Outside stock area 0.028 +- 0.037 (9) 0.001 - 0.111
ECHINODERMATA FALL Southern Georges Bank / Mid 0.088 +- 0.259 (10) 0.001 - 0.824
ECHINODERMATA SPRING Gulf of Maine / Northern Georges Bank 0.007 +- 0.008 (23) 0 - 0.032
ECHINODERMATA SPRING Outside stock area 0.19 +- NA (1) 0.19 - 0.19
ECHINODERMATA SPRING Southern Georges Bank / Mid 0.02 +- 0.025 (5) 0.002 - 0.061
ECHINODERMATA SUMMER Gulf of Maine / Northern Georges Bank 0.002 +- 0.002 (5) 0 - 0.004
ECHINODERMATA SUMMER Outside stock area 0 +- NA (1) 0 - 0
ECHINODERMATA WINTER Southern Georges Bank / Mid 0.008 +- 0.005 (2) 0.005 - 0.012
FISH FALL Gulf of Maine / Northern Georges Bank 0.396 +- 0.217 (40) 0.005 - 0.896
FISH FALL Outside stock area 0.288 +- 0.274 (29) 0.006 - 0.896
FISH FALL Southern Georges Bank / Mid 0.25 +- 0.171 (45) 0.002 - 0.725
FISH SPRING Gulf of Maine / Northern Georges Bank 0.362 +- 0.27 (39) 0.002 - 0.862
FISH SPRING Outside stock area 0.306 +- 0.244 (22) 0.01 - 0.843
FISH SPRING Southern Georges Bank / Mid 0.303 +- 0.204 (36) 0.021 - 0.812
FISH SUMMER Gulf of Maine / Northern Georges Bank 0.316 +- 0.161 (9) 0.022 - 0.493
FISH SUMMER Outside stock area 0.252 +- 0.227 (5) 0.081 - 0.644
FISH SUMMER Southern Georges Bank / Mid 0.097 +- 0.131 (3) 0.008 - 0.248
FISH WINTER Southern Georges Bank / Mid 0.401 +- 0.209 (13) 0.078 - 0.875
MOLLUSCA FALL Gulf of Maine / Northern Georges Bank 0.039 +- 0.039 (33) 0 - 0.126
MOLLUSCA FALL Outside stock area 0.122 +- 0.169 (15) 0.002 - 0.567
MOLLUSCA FALL Southern Georges Bank / Mid 0.136 +- 0.132 (42) 0 - 0.464
MOLLUSCA SPRING Gulf of Maine / Northern Georges Bank 0.036 +- 0.084 (24) 0 - 0.403
MOLLUSCA SPRING Outside stock area 0.041 +- 0.065 (12) 0 - 0.217
MOLLUSCA SPRING Southern Georges Bank / Mid 0.114 +- 0.125 (32) 0 - 0.491
MOLLUSCA SUMMER Gulf of Maine / Northern Georges Bank 0.04 +- 0.059 (8) 0 - 0.182
MOLLUSCA SUMMER Outside stock area 0.06 +- 0.071 (4) 0.009 - 0.161
MOLLUSCA SUMMER Southern Georges Bank / Mid 0.297 +- 0.306 (2) 0.081 - 0.514
MOLLUSCA WINTER Southern Georges Bank / Mid 0.162 +- 0.18 (11) 0.026 - 0.654
OTHER FALL Gulf of Maine / Northern Georges Bank 0.004 +- 0.005 (30) 0 - 0.023
OTHER FALL Outside stock area 0.008 +- 0.01 (13) 0 - 0.034
OTHER FALL Southern Georges Bank / Mid 0.007 +- 0.007 (26) 0 - 0.028
OTHER SPRING Gulf of Maine / Northern Georges Bank 0.006 +- 0.01 (19) 0 - 0.037
OTHER SPRING Outside stock area 0.009 +- 0.013 (11) 0 - 0.044
OTHER SPRING Southern Georges Bank / Mid 0.011 +- 0.013 (25) 0.001 - 0.053
OTHER SUMMER Gulf of Maine / Northern Georges Bank 0.006 +- 0.005 (6) 0 - 0.014
OTHER SUMMER Outside stock area 0.001 +- 0.001 (2) 0 - 0.001
OTHER SUMMER Southern Georges Bank / Mid 0.013 +- 0.016 (2) 0.002 - 0.024
OTHER WINTER Southern Georges Bank / Mid 0.008 +- 0.002 (2) 0.007 - 0.01
WORMS FALL Gulf of Maine / Northern Georges Bank 0 +- 0 (8) 0 - 0.002
WORMS FALL Outside stock area 0.003 +- 0.003 (3) 0 - 0.006
WORMS FALL Southern Georges Bank / Mid 0.044 +- 0.055 (2) 0.006 - 0.083
WORMS SPRING Gulf of Maine / Northern Georges Bank 0.003 +- 0.003 (6) 0 - 0.009
WORMS SPRING Outside stock area 0.001 +- NA (1) 0.001 - 0.001
WORMS SPRING Southern Georges Bank / Mid 0.006 +- 0.003 (5) 0.001 - 0.007
WORMS SUMMER Gulf of Maine / Northern Georges Bank 0.001 +- 0.001 (3) 0.001 - 0.003
WORMS SUMMER Southern Georges Bank / Mid 0.001 +- NA (1) 0.001 - 0.001
WORMS WINTER Southern Georges Bank / Mid 0.006 +- NA (1) 0.006 - 0.006
Data

Temperature

Surface and bottom temperature data were pulled from survdat.

Figures

Separate geom_gls() functions were fit for fall and spring measurements; trend lines are only shown when the trend was statistically significant, so some plots may have fewer than two trend lines. Fall has solid trend lines, and spring has dashed trend lines. Please note, sometimes the survey observed a small number of fish outside of the defined stock area.

Summary
Surface temperature
Season Region Mean value +- SD (n years) Mean value +- SD (past 5 years) Range (total) Range (past 5 years)
FALL Gulf of Maine / Northern Georges Bank 11.94 +- 1.26 (57) 13.23 +- 0.53 (5) 8.57 - 14.35 12.44 - 13.87
FALL Outside stock area 12.27 +- 1.89 (56) 13.8 +- 0.85 (5) 7.8 - 17.23 13.13 - 15.22
FALL Southern Georges Bank / Mid 17.12 +- 2.22 (57) 18.53 +- 2.25 (5) 9.43 - 20.69 14.77 - 20.17
SPRING Gulf of Maine / Northern Georges Bank 5.67 +- 1.26 (52) 7.45 +- 1.73 (5) 3.6 - 10.15 5.54 - 10.15
SPRING Outside stock area 5.64 +- 1.79 (52) 7.01 +- 2.5 (5) 2.5 - 12.67 4.62 - 11.26
SPRING Southern Georges Bank / Mid 6.48 +- 0.98 (52) 7.26 +- 1.34 (5) 4.87 - 9.53 5.99 - 9.53
SUMMER Gulf of Maine / Northern Georges Bank 16.64 +- 0.56 (4) 16.85 +- 0.44 (3) 16.01 - 17.24 16.38 - 17.24
SUMMER Outside stock area 17.85 +- 1.68 (3) 17.85 +- 1.68 (3) 16.82 - 19.79 16.82 - 19.79
SUMMER Southern Georges Bank / Mid 18.92 +- NA (1) 18.92 +- NA (1) 18.92 - 18.92 18.92 - 18.92
WINTER Gulf of Maine / Northern Georges Bank 4.24 +- NA (1) 4.24 +- NA (1) 4.24 - 4.24 4.24 - 4.24
WINTER Outside stock area 3.88 +- 1.2 (3) 3.88 +- 1.2 (3) 2.75 - 5.14 2.75 - 5.14
WINTER Southern Georges Bank / Mid 6.19 +- 0.91 (15) 6.35 +- 1.39 (5) 4.27 - 7.85 4.27 - 7.85
Bottom temperature
Season Region Mean value +- SD (n years) Mean value +- SD (past 5 years) Range (total) Range (past 5 years)
FALL Gulf of Maine / Northern Georges Bank 8.21 +- 0.88 (57) 9.16 +- 0.41 (5) 5.85 - 9.68 8.42 - 9.4
FALL Outside stock area 10.76 +- 2.21 (56) 11.97 +- 1.28 (5) 5.8 - 15 10.29 - 13.82
FALL Southern Georges Bank / Mid 11.4 +- 0.96 (57) 12.53 +- 0.45 (5) 9.45 - 13.15 11.84 - 12.89
SPRING Gulf of Maine / Northern Georges Bank 6.14 +- 0.66 (52) 6.94 +- 0.63 (5) 4.99 - 7.49 5.94 - 7.49
SPRING Outside stock area 5.63 +- 1.11 (52) 5.72 +- 1.15 (5) 3.72 - 9.84 4.29 - 7.48
SPRING Southern Georges Bank / Mid 7.87 +- 0.87 (52) 8.28 +- 0.76 (5) 5.74 - 9.57 7.62 - 9.57
SUMMER Gulf of Maine / Northern Georges Bank 6.73 +- 0.8 (4) 6.87 +- 0.91 (3) 5.83 - 7.53 5.83 - 7.53
SUMMER Outside stock area 7.06 +- 1.4 (3) 7.06 +- 1.4 (3) 5.5 - 8.23 5.5 - 8.23
SUMMER Southern Georges Bank / Mid 9.81 +- NA (1) 9.81 +- NA (1) 9.81 - 9.81 9.81 - 9.81
WINTER Gulf of Maine / Northern Georges Bank 5.97 +- NA (1) 5.97 +- NA (1) 5.97 - 5.97 5.97 - 5.97
WINTER Outside stock area 4.51 +- 0.78 (3) 4.51 +- 0.78 (3) 3.71 - 5.26 3.71 - 5.26
WINTER Southern Georges Bank / Mid 7.61 +- 1.21 (15) 6.93 +- 1.03 (5) 5.54 - 10.09 5.54 - 8.36
Data

Salinity

Surface and bottom salinity data were pulled from survdat.

Figures

Separate geom_gls() functions were fit for fall and spring measurements; trend lines are only shown when the trend was statistically significant, so some plots may have fewer than two trend lines. Fall has solid trend lines, and spring has dashed trend lines. Please note, sometimes the survey observed a small number of fish outside of the defined stock area.

Summary
Surface salinity
Season Region Mean value +- SD (n years) Mean value +- SD (past 5 years) Range (total) Range (past 5 years)
FALL Gulf of Maine / Northern Georges Bank 32.44 +- 0.3 (28) 32.6 +- 0.14 (5) 31.87 - 32.87 32.41 - 32.75
FALL Outside stock area 32.01 +- 0.42 (28) 32.17 +- 0.35 (5) 31.14 - 32.71 31.61 - 32.43
FALL Southern Georges Bank / Mid 32.94 +- 0.53 (28) 33.39 +- 0.57 (5) 31.78 - 33.94 32.46 - 33.94
SPRING Gulf of Maine / Northern Georges Bank 32.21 +- 0.31 (28) 32.19 +- 0.29 (5) 31.33 - 32.62 31.87 - 32.62
SPRING Outside stock area 31.31 +- 0.62 (28) 31.62 +- 0.46 (5) 30.02 - 32.2 30.92 - 32.02
SPRING Southern Georges Bank / Mid 32.95 +- 0.35 (28) 33.14 +- 0.38 (5) 32.22 - 33.71 32.65 - 33.71
SUMMER Gulf of Maine / Northern Georges Bank 31.74 +- 0.3 (3) 31.74 +- 0.3 (3) 31.4 - 31.94 31.4 - 31.94
SUMMER Outside stock area 31.11 +- 0.16 (3) 31.11 +- 0.16 (3) 30.92 - 31.23 30.92 - 31.23
WINTER Gulf of Maine / Northern Georges Bank 32.33 +- NA (1) 32.33 +- NA (1) 32.33 - 32.33 32.33 - 32.33
WINTER Outside stock area 31.64 +- 0.25 (3) 31.64 +- 0.25 (3) 31.34 - 31.79 31.34 - 31.79
WINTER Southern Georges Bank / Mid 33.05 +- 0.49 (15) 33.3 +- 0.61 (5) 32.39 - 34.1 32.68 - 34.1
Bottom salinity
Season Region Mean value +- SD (n years) Mean value +- SD (past 5 years) Range (total) Range (past 5 years)
FALL Gulf of Maine / Northern Georges Bank 33.59 +- 0.22 (28) 33.71 +- 0.18 (5) 33.17 - 34 33.44 - 33.84
FALL Outside stock area 32.68 +- 0.43 (28) 32.9 +- 0.56 (5) 31.74 - 33.45 32.01 - 33.45
FALL Southern Georges Bank / Mid 33.59 +- 0.41 (28) 33.8 +- 0.32 (5) 32.86 - 34.32 33.34 - 34.1
SPRING Gulf of Maine / Northern Georges Bank 33.53 +- 0.19 (28) 33.63 +- 0.11 (5) 33.08 - 33.98 33.44 - 33.75
SPRING Outside stock area 32.25 +- 0.49 (28) 32.58 +- 0.25 (5) 31.11 - 32.97 32.33 - 32.97
SPRING Southern Georges Bank / Mid 33.82 +- 0.34 (28) 33.93 +- 0.26 (5) 32.88 - 34.47 33.66 - 34.35
SUMMER Gulf of Maine / Northern Georges Bank 33.2 +- 0.21 (3) 33.2 +- 0.21 (3) 32.99 - 33.41 32.99 - 33.41
SUMMER Outside stock area 32.04 +- 0.42 (3) 32.04 +- 0.42 (3) 31.56 - 32.3 31.56 - 32.3
WINTER Gulf of Maine / Northern Georges Bank 33.49 +- NA (1) 33.49 +- NA (1) 33.49 - 33.49 33.49 - 33.49
WINTER Outside stock area 32.31 +- 0.24 (3) 32.31 +- 0.24 (3) 32.04 - 32.51 32.04 - 32.51
WINTER Southern Georges Bank / Mid 33.71 +- 0.38 (15) 33.73 +- 0.44 (5) 32.88 - 34.31 33.13 - 34.31
Data

Abundance

Abundance data were pulled from survdat and assessmentdata::stockAssessmentData.

Figures

Separate geom_gls() functions were fit for fall and spring measurements; trend lines are only shown when the trend was statistically significant, so some plots may have fewer than two trend lines. Fall has solid trend lines, and spring has dashed trend lines. Please note, sometimes the survey observed a small number of fish outside of the defined stock area.

Survey abundance (raw measurements):

Survey abundance (swept area estimates):

Please note, these estimates are not parsed by region or season. Swept area estimates are based on spring and fall surveys only. The shaded gray region indicates +/- two standard errors.

Assessment abundance:

## [1] "NO DATA"
Survey summary
Measured abundance
Season Region Mean value +- SD (n years) Mean value +- SD (past 5 years) Range (total) Range (past 5 years)
FALL Gulf of Maine / Northern Georges Bank 2,333.46 +- 2,469.89 (57) 7,940.2 +- 1,722.26 (5) 87 - 10,779 6,495 - 10,779
FALL Outside stock area 538.91 +- 646.33 (56) 1,419.4 +- 523.86 (5) 1 - 4,008 812 - 2,056
FALL Southern Georges Bank / Mid 2,183.56 +- 1,730.59 (57) 3,700.2 +- 1,995.61 (5) 333 - 9,869 1,337 - 6,670
SPRING Gulf of Maine / Northern Georges Bank 1,762.27 +- 2,053.74 (52) 6,421.8 +- 2,089.64 (5) 98 - 9,487 3,891 - 9,487
SPRING Outside stock area 608.45 +- 776.95 (53) 824.4 +- 740.12 (5) 5 - 3,209 23 - 1,994
SPRING Southern Georges Bank / Mid 2,237.81 +- 2,863.93 (53) 1,953.6 +- 1,214.32 (5) 240 - 15,744 496 - 3,805
SUMMER Gulf of Maine / Northern Georges Bank 384 +- 146.11 (4) 327.67 +- 113.93 (3) 200 - 553 200 - 419
SUMMER Outside stock area 157.67 +- 79.1 (3) 157.67 +- 79.1 (3) 111 - 249 111 - 249
SUMMER Southern Georges Bank / Mid 839 +- NA (1) 839 +- NA (1) 839 - 839 839 - 839
WINTER Gulf of Maine / Northern Georges Bank 8 +- NA (1) 8 +- NA (1) 8 - 8 8 - 8
WINTER Outside stock area 46.33 +- 63.85 (3) 46.33 +- 63.85 (3) 7 - 120 7 - 120
WINTER Southern Georges Bank / Mid 1,308.33 +- 913.94 (15) 747.2 +- 373.13 (5) 204 - 3,652 204 - 1,232
Data

Survey data (raw measurements):

Survey data (swept area estimates):

Assessment data:

Biomass

Biomass data were pulled from survdat.

Figures

Separate geom_gls() functions were fit for fall and spring measurements; trend lines are only shown when the trend was statistically significant, so some plots may have fewer than two trend lines. Fall has solid trend lines, and spring has dashed trend lines. Please note, sometimes the survey observed a small number of fish outside of the defined stock area.

Survey biomass (raw measurements):

Survey biomass (swept area estimates):

Please note, these estimates are not parsed by region or season. Swept area estimates are based on spring and fall surveys only. The shaded gray region indicates +/- two standard errors.

Assessment biomass:

Summary
Measured biomass
Season Region Mean value +- SD (n years) Mean value +- SD (past 5 years) Range (total) Range (past 5 years)
FALL Gulf of Maine / Northern Georges Bank 456.28 +- 439.45 (57) 1,460.88 +- 402.43 (5) 23.6 - 2,100.27 1,150.97 - 2,100.27
FALL Outside stock area 76.73 +- 76.28 (54) 145.99 +- 32.25 (5) 0.5 - 483.1 107.76 - 187.68
FALL Southern Georges Bank / Mid 296.03 +- 228.36 (57) 456.8 +- 209.75 (5) 51.8 - 1,056.94 183.19 - 730.23
SPRING Gulf of Maine / Northern Georges Bank 338.69 +- 352.51 (52) 1,188.08 +- 399.79 (5) 32.8 - 1,678.1 740.73 - 1,678.1
SPRING Outside stock area 54.29 +- 83.88 (53) 99.86 +- 123.56 (5) 0.5 - 330.5 1.53 - 313.79
SPRING Southern Georges Bank / Mid 352.85 +- 414.2 (53) 199.04 +- 119.37 (5) 22.3 - 2,260.94 33.93 - 352.68
SUMMER Gulf of Maine / Northern Georges Bank 108.38 +- 65.04 (4) 77.22 +- 22.82 (3) 51.6 - 201.85 51.6 - 95.35
SUMMER Outside stock area 37.23 +- 19.14 (3) 37.23 +- 19.14 (3) 25.28 - 59.3 25.28 - 59.3
SUMMER Southern Georges Bank / Mid 216.33 +- NA (1) 216.33 +- NA (1) 216.33 - 216.33 216.33 - 216.33
WINTER Gulf of Maine / Northern Georges Bank 0.6 +- NA (1) 0.6 +- NA (1) 0.6 - 0.6 0.6 - 0.6
WINTER Outside stock area 2.4 +- NA (1) 2.4 +- NA (1) 2.4 - 2.4 2.4 - 2.4
WINTER Southern Georges Bank / Mid 174.19 +- 164.27 (15) 65.02 +- 34.72 (5) 11.87 - 515.5 11.87 - 108.46
Data

Survey data (raw measurements):

Survey data (swept area estimates):

Assessment data:

Catch

Stock assessment catch data are from assessmentdata::stockAssessmentData. Recreational catch data were downloaded from NOAA MRIP. Commercial catch data were downloaded from NOAA FOSS.

Figures

Stock assessment catch:

Recreational catch:

Commercial catch:

Commercial vs recreational catch:

Data

Stock assessment catch:

Recreational catch:

Commercial catch:

Commercial vs recreational catch:

Length

Length data were pulled from survdat. Only years with more than 10 fish lengths were considered for analysis.

Figures

Separate geom_gls() functions were fit for the minimum, mean, and maximum lengths; trend lines are only shown when the trend was statistically significant, so some plots may have fewer than three trend lines. Please note, sometimes the survey observed a small number of fish outside of the defined stock area.

Summary
Season Region Mean value +- SD (n fish, n years) Mean value +- SD (n fish, past 5 years) Range (total) Range (past 5 years)
FALL Gulf of Maine / Northern Georges Bank 28.2 +- 9.52 (133,002, 57) 28.95 +- 7.06 (39,701, 5) 1 - 70 4 - 56
FALL Outside stock area 23.86 +- 9.48 (30,169, 53) 23.13 +- 6.99 (7,097, 5) 1 - 65 5 - 48
FALL Southern Georges Bank / Mid 24.44 +- 9.97 (124,371, 57) 25.85 +- 5.26 (18,501, 5) 1 - 63 3 - 49
SPRING Gulf of Maine / Northern Georges Bank 29.29 +- 7.86 (91,637, 52) 29.35 +- 7.08 (32,109, 5) 3 - 69 5 - 54
SPRING Outside stock area 18.91 +- 9.89 (32,225, 50) 22.97 +- 9.68 (4,122, 5) 2 - 59 6 - 56
SPRING Southern Georges Bank / Mid 28.23 +- 6.5 (118,603, 53) 23.75 +- 7.6 (9,768, 5) 1 - 71 5 - 52
SUMMER Gulf of Maine / Northern Georges Bank 33.98 +- 7.19 (1,249, 4) 32.98 +- 7.41 (941, 3) 13 - 58 13 - 53
SUMMER Outside stock area 33.78 +- 5.97 (277, 3) 33.78 +- 5.97 (277, 3) 18 - 59 18 - 59
SUMMER Southern Georges Bank / Mid 34.01 +- 4.85 (503, 1) 34.01 +- 4.85 (503, 1) 11 - 53 11 - 53
WINTER Outside stock area 13.85 +- 3.98 (119, 1) 13.85 +- 3.98 (119, 1) 6 - 20 6 - 20
WINTER Southern Georges Bank / Mid 26.64 +- 6.93 (13,037, 15) 22.69 +- 8.39 (1,317, 5) 3 - 54 4 - 49
Data

Condition

Condition information comes from diet data; only regions and seasons with more than 10 fish observations were considered. We calculated a rough condition factor as: Weight / Length^3, and relative weight was previously calculated.

Figures

Length vs weight

Please note, no trend lines were fit, points are jittered to reduce overlap, and sometimes the survey observed a small number of fish outside of the defined stock area.

Condition factor: Weight-volume

If there were more than 30 years of data, a geom_gls() regression was fit. In order to fit the geom_gls() regression, we calculated the mean condition factor for each year and plotted the geom_gls() through those points. Please note, points are jittered to reduce overlap, and sometimes the survey observed a small number of fish outside of the defined stock area.

Condition factor: Relative weight

Please note, this data is aggregated by Ecological Protection Unit (EPU), which may differ slightly from the stock assessment regions.

Data

Length vs weight with weight-volume condition factor

Relative weight condition factor Please note, this data is aggregated by Ecological Protection Unit (EPU), which may differ slightly from the stock assessment regions.

Risk analysis

A preliminary risk analysis was conducted by ranking all species according to their indicator values. A high rank number and a normalized rank near 1 indicates that the species is at risk or of importance based on the measured indicator values. When a species was missing an indicator, it was assigned a normalized rank of 0.5.